Answer:
x = 5
Step-by-step explanation:
2 (x + 4) = 18
x + 4 = 9
x=5
2(x + 4) = 18
Divide each side by 2
2/2(x + 4) = 18/2
x+4 = 9
Subtract 4 from each side
x+4-4 = 9-4